// Copyright 2018 the V8 project authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file./* Test behaviors when the prototype has elements */// findIndex(function(){vararray=[,];functionfindIndex(){returnarray.findIndex(v=>v>0);}assertEquals(findIndex(),-1);array.__proto__.push(6);assertEquals(findIndex(),0);})();